On Tue, 12 Apr 2005 09:18:53 -0700, John R Pierce wrote:

>Many (most?) minicomputers in the early 1970s were entirely TTL bipolar... For 
>example, the early 1970's Data General Nova 1200 was based on 74181 ALUs and 
>74xx discrete logic decoders, sequencers, etc.   

Yep, that's exactly what makes up the PDP11 boards.  4 x 74181 ALUs at the top. 
It also had proper core-memory.  

/Per


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